| 摘要 |
PURPOSE:To increase the strength of an intermediate wall and to prevent or reduce the generation of gear noise by a method wherein an intermediate wall of boxform double structure is formed with two covers with which the whole of a gear train for outputting a rotational force is covered, and the gear train is rotated and supported at the intermediate wall. CONSTITUTION:A gear train 40 of a drive gear 36 for effecting an output to an output gear 30 rotatable relatively to an input shaft 12 and an intermediate shaft 38 is covered with first and second covers 18a and 18b on the whole. The peripheral edge parts of the two covers 18a and 18b are fixed to each other by means of 8 bolt 48 to form an intermediate wall 18. Angular ball bearings 50, 50a and a roller bearing 52 by means of which the output gear 30 and the drive gear 36 are supported are supported to the intermediate wall 18. Thus, since the output gear 30 and the driven gear 36 are supported to the intermediate wall 18 of box type structure, strength is increased without increasing weight so much and the generation of gear noise can be prevented or reduced. |
